Heavy vs Light Load Single-Joint Exercise Performance with Different Rest Intervals.

The aim of the study was to compare the effect of three distinct rest period lengths between sets of upper body single-joint exercise with different load zones and volume designed for either endurance or hypertrophy (50% or 80% of 1-RM). Sixteen trained men (20.75 ± 2.54 years; 76.35 ± 5.03 kg; 176.75 ± 3.33 cm, 24.53 ± 1.47 kg/m2) performed a test and retest of 1-RM on non-consecutive days. Forty-eight hours after load testing, the participants were randomly assigned to six sessions consisting of four sets of the triceps pull-down, combining different intensities with distinct rest periods between sets. The shorter 1 minute rest promoted a significant reduction in the total repetition number compared to 3 minute rest for both workloads. There was a difference between 3 and 5 minute conditions for the 50% of 1-RM that did not occur for the 80% of 1-RM condition. Both intensities presented significant interaction values for the rest conditions vs. each set (50% p = 0.0001; 80% p = 0.0001). Additionally, significant values were found for the main effect of the performance of subsequent sets (50% p = 0.003; 80% p = 0.001) and rest conditions (50% p = 0.0001; 80% p = 0.0001). In conclusion, for heavier loads (80%) to fatigue, longer rest of 3 to 5 minutes seems to allow for better recovery between sets and thus, promotes a greater volume. However, when training with lighter loads (50%), the magnitude of the rest seems to directly affect the performance of subsequent sets, and also presents a correlation with total volume achieved for the upper body single-joint exercise scheme.

Influência dos exercícios aeróbio e resistido sobre perfil hemodinâmico e lipídico em idosas hipertensas / Influence of aerobic exercise and resistance training on hemodynamic and lipid profile in hypertensive elderly

O envelhecimento é um processo caracterizado pela diminuição das funções fisiológicas e de todas as capacidades físicas. O objetivo do presente estudo foi verificar o efeito do exercício aeróbio e resistido sobre parâmetros hemodinâmicos, antropométricos e lipídicos de mulheres idosas hipertensas. Participaram do estudo 25 mulheres no grupo experimental (GE) (74,44 ± 6,3 anos) e 12 mulheres no grupo controle (GC) (75,25 ± 6,8 anos). O GE participou de sessões 60 minutos de exercícios físicos combinados com intensidade moderada que contemplaram alongamentos, exercícios localizados e caminhada, enquanto o GC manteve seus hábitos normais. Ao contrário do GC todas as variáveis analisadas no GE sofreram alterações significativa de (p<0,05) nos três momentos de intervenção, FCrep (85,0 ± 11,4 bpm; 80,1 ± 10,3 bpm; 79,4 ± 9,9 bpm), PAS (157,6 ± 13,9 mmHg; 142,8 ± 10,6 mmHg; 132,8 ± 8,4 mmHg), PAD (92,4 ± 7,2 mmHg; 88,0 ± 5,0 mmHg; 82,0 ± 4,1 mmHg), glicemia (110,2 ± 16,4 ml/dl; 101,3 ± 12,8 ml/dl; 95,3 ± 10,4 ml/dl), triglicerídeos (205,6 ± 37,7 ml/dl; 184,2 ± 32,5 ml/dl; 170,4 ± 29,2 ml/dl), colesterol total (223,2 ± 27,8 ml/dl; 205,3 ± 24,1 ml/dl; 196,4 ± 22,3 ml/dl), HDL (43,1 ± 1,5 ml/dl; 44,3 ± 1,5 ml/dl; 44,8 ± 1,4 ml/dl), VLDL (28,3 ± 3,2 ml/dl; 26,2 ± 2,5 ml/dl; 25,4 ± 2,2 ml/dl), LDL (151,8 ± 26,3 ml/dl; 134,9 ± 23,3 ml/dl; 126,2 ± 21,2 ml/dl). Concluiu-se que os exercícios físicos combinados foram eficientes nas melhorias das variáveis hemodinâmicas, antropométricas e lipídicas em idosas hipertensas.

Aging is a process characterized by decreased function physiological and all physical abilities. The purpose of this study was to assess the effect of aerobic exercise and resistance training on hemodynamic parameters, anthropometric and lipid in elderly hypertensive women. Participated in this study 25 women in experimental group (GE) (74,44 ± 6,3 years) and 12 women in control group (CG) (75,25 ± 6,8 years). GE participated in physical exercise sessions that included the combined practice of stretching, localized exercises and walking while CG remained normal daily habits. Unlike the CG all variables in the EG had significant changes in three moments of intervention, HRrest (85,0 ± 11,4 bpm; 80,1 ± 10,3 bpm; 79,4 ± 9,9 bpm), SBP (157,6 ± 13,9 mmHg; 142,8 ± 10,6 mmHg; 132,8 ± 8,4 mmHg), DBP (92,4 ± 7,2 mmHg; 88,0 ± 5,0 mmHg; 82,0 ± 4,1 mmHg), glucose (110,2 ± 16,4 ml/dl; 101,3 ± 12,8 ml/dl; 95,3 ± 10,4 ml/dl), triglycerides (205,6 ± 37,7 ml/dl; 184,2 ± 32,5 ml/dl; 170,4 ± 29,2 ml/dl), total cholesterol (223,2 ± 27,8 ml/dl; 205,3 ± 24,1 ml/dl; 196,4 ± 22,3 ml/dl), HDL (43,1 ± 1,5 ml/dl; 44,3 ± 1,5 ml/dl; 44,8 ± 1,4 ml/dl), VLDL (28,3 ± 3,2 ml/dl; 26,2 ± 2,5 ml/dl; 25,4 ± 2,2 ml/dl), LDL (151,8 ± 26,3 ml/dl; 134,9 ± 23,3 ml/dl; 126,2 ± 21,2 ml/dl). We concluded that exercise combination were effective in improvement of hemodynamic, anthropometric and lipid levels in elderly hypertensive.

A influência de 16 semanas de exercícios físicos combinados sobre o perfil metabólico em idosas / The effect of 16 weeks exercise combined on the metabolic parameters in elderlies

O envelhecimento é um processo multifatorial influenciado por aspectos psicológicos, sociais, biológicos e funcionais. O objetivo do presente estudo foi verificar os benefícios de exercícios físicos combinados que contemplou a prática de jogos lúdicos, exercícios de flexibilidade, localizados, equilíbrio e caminhada com intensidade moderada, sobre o perfil metabólico de idosas. 54 idosas foram divididas em dois grupos. O grupo experimental (GE) foi composto por 33 sujeitos onde as idades variaram entre 60 a 87 anos (68,9 ± 6,8 anos), enquanto o grupo controle (GC) foi composto por 21 sujeitos com a faixa etária variando entre 61 a 81 anos (66,5 ± 6,0 anos). Para coleta de dados dos parâmetros metabólicos, foram realizados exames sanguíneos dos indicadores colesterol total (CT), HDL colesterol, LDL colesterol, VLDL colesterol, triglicerídeos e glicose. O GE obteve melhoras significativas nos parâmetros metabólicos após todos seus indicadores sanguíneos avaliados. O CT teve uma queda de 228,0 para 190,5. O LDL passou de 162,4 para 115,2. O VLDL passou de 31,5 para 29,7. O TRI passou de 127,5 para 105,1. A GLI passou de 94,8 para 85,9. O HDL teve um aumento em seu valor passando de 48,4 para 53,4. Para o GC esta melhora não foi encontrada, exceto para o Colesterol Total que teve seus valores alterados de 220,0 para 198,3. Assim, os exercícios físicos combinados exerceram importante papel na melhoria geral de saúde da população estudada em todos os parâmetros avaliados.

Aging is a multifactor process influenced by chronological time, by psychological aspects, social, biological and functional. The objective of this study was to assess the benefits of exercise combined, with moderate intensity, on the metabolic parameters in elderly. 54 elderly women were divided into two groups. The experimental group (GE) consisted of 33 subjects where the ages ranged from 60-87 years with mean (68.93 ± 6.83), while the control group (GC) consisted of 21 subjects with age ranging from 61-81 years, mean (6.00 ± 66.55). To collect data, metabolic parameters, blood tests were performed for total cholesterol, HDL cholesterol, LDL cholesterol, VLDL Cholesterol, Triglycerides and Glucose. The results of GE in relation to metabolic parameters analyzed were significant improvements after practice activities in all their indicators assessed blood. For the GC the same improvement was not found, only the total cholesterol showed significant improvement. It is concluded that physical activity combined exerted important role in improving general health of population in all parameters tested in GE which likely will entail a greater longevity of the population with good quality.